package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

@Service
public class DishServicelmpl implements DishService {
    @Autowired
    private  DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Autowired
    private SetmealMapper setmealMapper;
    @Override
    @Transactional
    public void add(DishDTO dishDTO) {
        Dish dish =new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.insert(dish);
        Long dishId = dish.getId();
          List<DishFlavor> flavors= dishDTO.getFlavors();
           if (flavors!=null && flavors.size() > 0){
              flavors.forEach(dishFlavor ->
                  dishFlavor.setDishId(dishId));
              dishFlavorMapper.insertFlavor(flavors);
          }
    }

    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper pageHelper = new PageHelper();
        pageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        List<Dish> dishList = dishMapper.pageQuery(dishPageQueryDTO);
        Page<Dish> p = (Page) dishList;
        return new PageResult(p.getTotal(),p.getResult());
    }

    @Override
    public void delete(List<Long> ids) {
        for(Long id:ids) {
            Dish dish = dishMapper.getById(id);
            if (dish.getStatus() == StatusConstant.ENABLE) {
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
         }
            List<Long> setmealids = setmealDishMapper.countByDishId(ids);
            if (setmealids!=null && setmealids.size() > 0){
                throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
            }
            for (Long id:ids) {
                dishMapper.delete(ids);
                Long dishId = id;
                dishFlavorMapper.deleteById(dishId);
            }

    }

    @Override
    public void startOrStop(Integer status, Long id) {
        dishMapper.startOrStop(status,id);
        //如果套餐里的菜品停售，则将套餐状态也停售
        if (status==0){
            Long setmealId = setmealDishMapper.getBySetmealId(id);
            setmealMapper.startOrStop(status,setmealId);
        }
    }

    @Override
    public DishVO getById(Long id) {
        DishVO dishVO = new DishVO();
        Dish dish = dishMapper.getById(id);
        Long dishId=dish.getId();
        List<DishFlavor> dishFlavor = dishFlavorMapper.getById(dishId);
        dishVO.setFlavors(dishFlavor);
        BeanUtils.copyProperties(dish,dishVO);
        return dishVO;
    }

    @Override
    public void updateById(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.updateById(dish);
         Long dishId=dish.getId();
         dishFlavorMapper.deleteById(dishId);
         List<DishFlavor> flavors= dishDTO.getFlavors();
          if (flavors!=null && flavors.size() > 0){
              flavors.forEach(dishFlavor ->
                  dishFlavor.setDishId(dishId));
              dishFlavorMapper.insertFlavor(flavors);
          }
    }

    @Override
    public List<Dish> list(Long categoryId) {
        List<Dish> list = dishMapper.list(categoryId);
        return list;
    }
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.listByStatus(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getById(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }
}
